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Showing papers by "Cochin University of Science and Technology published in 1978"


Journal ArticleDOI
01 Jun 1978-Pramana
TL;DR: In this paper, a sine-Gordon type scalar field with a potential in two dimensions was studied and a static,c-number, stable, finite energy solution was obtained.
Abstract: A sine-Gordon type scalar field with a\(\cos ^4 [(\sqrt {\bar \lambda } \phi )/m]\) potential in two dimensions is studied and a static,c-number, stable, finite energy solution obtained. The intersoliton potential is evaluated for this model and is shown to be long range, attractive and ‘strong’ in the weak coupling regime. A positronium-like spectrum of bound states of the soliton-antisoliton pair is derived using this potential. The coupling with a massless quark field is discussed and an exact, stable and analytic solution of the spinor field exhibiting confinement in one space dimension is obtained.

3 citations


Journal ArticleDOI
01 Mar 1978-Urology
TL;DR: Obstruction was considered a precipitating factor in the morphogenesis of diverticula on the distal tubules and the simple cyst, found exclusively in the adjacent renal parenchyma to the obstruction.

3 citations


Journal ArticleDOI
01 Aug 1978-Pramana
TL;DR: In this paper, an investigation of the newly discovered charmed mesonsD 0 andD +, particularly their non-leptonic decay modes, is carried out in the framework of the MIT bag model, and the amplitude for a number of two-body final state decays are explicitly evaluated and compared with other available estimates.
Abstract: An investigation of the newly discovered charmed mesonsD 0 andD +, particularly their non-leptonic decay modes, is carried out in the framework of the MIT bag model. The amplitude for a number of two-body final state decays are explicitly evaluated and compared with other available estimates.

2 citations


Journal ArticleDOI
01 Jul 1978-Pramana
TL;DR: Two dimensional sine-Gordon field theory on a lattice is studied using the single-site basis variational method of Drell and others in this paper, and the nature of the phase transition associated with spontaneous symmetry breakdown in a SG field system is clarified to be of second order.
Abstract: Two dimensional sine-Gordon (SG) field theory on a lattice is studied using the single-site basis variational method of Drell and others The nature of the phase transition associated with the spontaneous symmetry breakdown in a SG field system is clarified to be of second order A generalisation is offered for a SG-type field theory in two dimensions with a potential of the from [cos n (√λ/m)ϕ−1]

1 citations